Hydroponics is a term which derives from the Greek. (hydro = water and ponos = labor). It describes a method, where plants where grown with the help of mineral nutrient solutions, water and with artificial soil. This technique will be essential for the “Floating Permaculture”. It is fact that nearly any terrestrial plant will grow with hydroponics, as long as the water delivers the essential mineral nutrients.
The use of Hydroponics becomes interesting as a self-efficiency system, if it is bound up with an Aquaponic system. It would be possible to grow fish and vegetables at the same time. It means that the catfish will expel nutrients in the recycled water in the term of waste, while bacteria will makes it available to plants. This is basically mentioned in Phase II later. Through this method, the water is enriched naturally with fertilizer; not as in common in the farming industry, where too much fertilizer are put in the ground.
Further benefit by using hydroponics is the faster and better food production. A negative side effect is the possibility that it is also an environment which stimulates salmonella. It would be interesting to see, which natural systems could be theoretically involved to minimize this effect. By using Mineral-Wool (rock wool) disease problems and thus use far less pesticides. Figures show that it is up to 90% less. A positive side effect of using rock wool for hydroponics is, that this material can be in many ways recycled. It can be chopped into granulate or be used in the compost, which results in a closed feedback loop.